6 ideas
18261 | A simplification which is complete constitutes a definition [Kant] |
22275 | Logic gives us the necessary rules which show us how we ought to think [Kant] |
17744 | De Morgan started the study of relations and their properties [De Morgan, by Walicki] |
13501 | De Morgan found inferences involving relations, which eluded Aristotle's syllogistic [De Morgan, by Hart,WD] |
18260 | If we knew what we know, we would be astonished [Kant] |
3448 | Do new ideas increase the weight of the brain? [Dance] |